Firefox has some protections in the topics you mentioned, but it does not allow you to change things like time zone (and regional or language settings) per domain. This extension has such functions. That's what these switches are for.

As I wrote - the extension does not patch something that does not exist. I didn't mention it in the main post because the 4,000 character limit was simply too limiting for me. The text entry in AMO does not tell the user this either. Thanks for capturing one screenshot, as I simply had to mix up the collection of screenshots when I updated the extension's page - in fact, under Firefox, the configuration window does not present options related to Client Hints (also unavailable on the Mozilla platform) as well as the Battery Status API.

In the extension interface, you will find two places presenting protection details for those APIs with a "Not applicable" status. Configuration options for these items in the settings panel are not visible.

Thanks for pointing out this screenshot, as that wasn't my intention. If you look at the screenshot of the container options, you will see the actual feature set for Firefox. I've already deleted the screenshot, sorry for the confusion.